Download Chdman.exe | 90% FREE |
chdman createcd -i "game.cue" -o "game.chd"
If an emulator requires raw files, use the extraction command.
Syntax:
chdman extractcd -i "input_file.chd" -o "output_file.cue"
While chdman.exe is the gold‑standard for CHD handling, you might find the following utilities handy:
| Tool | What It Does | Where to Get It |
|------|--------------|-----------------|
| MAMEUIFX | Graphical front‑end that can call chdman in the background | https://mamedev.org/ |
| RetroArch | Multi‑system emulator that uses CHDs for supported cores | https://www.retroarch.com/ |
| chdman‑gui (third‑party) | Simple Windows GUI wrapper around the command‑line tool | GitHub – search “chdman‑gui” |
| 7‑Zip | General purpose archive manager; can extract .chd if you rename to .zip (not recommended for integrity) | https://www.7-zip.org/ |
Remember: Only the official chdman.exe is guaranteed to stay compatible with future MAME releases. Third‑party GUIs often become outdated after a new MAME version ships.
Now that you have the knowledge, go reclaim your SSD space. Your emulation library will thank you.
This article was last updated for MAME 0.259. Always check the official changelog for new chdman parameters.
To download chdman.exe and use it to compress your ROMs into CHD (Compressed Hunks of Data) format, follow this guide. This process can save up to 70% of storage space
for CD-based games (PS1, Sega CD, Saturn, etc.) while keeping them playable in emulators. 1. Download and Setup You can get chdman.exe in two ways: Official Source : Download the latest release from the MAME Official Downloads page. After extracting the MAME folder, chdman.exe will be located inside. Convenience Package
: Many users download a pre-packaged "CHDMAN" ZIP (often found on the Recalbox Wiki OnionUI Docs ) that includes helpful batch (.bat) files for automation. Recalbox Wiki 2. How to Convert Files (Windows) Option A: The Drag-and-Drop Method (Easiest) download chdman.exe
To download chdman.exe, you have two main paths: the official "clean" way or the quick "pre-packaged" way. Here is the "long story" made short: 1. The Official Way (MAME)
chdman.exe (Compressed Hunks of Data manager) is actually a sub-tool of the MAME emulator project. It is not officially distributed as a standalone file, so the safest way to get the latest, most stable version is to download the full MAME package. Download: Go to the MAMEdev Downloads page.
Action: Download the official Windows binary (the .exe or .zip).
Extraction: Once you extract or install MAME, look inside the main folder. You will find chdman.exe sitting right there alongside the emulator. 2. The Quick Way (Third-Party Bundles)
If you don't want the full MAME suite, many community tools for the PS Classic, Miyoo Mini, or Retropie bundle the executable with helpful scripts.
namDHC: This is a popular graphical interface (GUI) for chdman. Downloading it from the official namDHC GitHub usually includes a copy of the executable so you don't have to use the command line.
Batch Tools: Repositories like darklinkpower's CHDMAN-Batch-Tools provide .bat files that let you drag and drop your .bin/.cue files directly onto them to convert them. 3. The "No-Download" Alternative
If you only have a few files to convert and don't want to install anything, you can use chdman.com, which is a web-based version that runs entirely in your browser using WebAssembly—nothing actually gets uploaded to a server, it's processed locally on your machine.
Pro Tip: If you use the standalone .exe, it is a command-line tool. It won't do anything if you just double-click it. You need to run it through a terminal (CMD/PowerShell) or use a .bat script to automate the "press a button to convert" process. darklinkpower/CHDMAN-Batch-Tools - GitHub chdman createcd -i "game
The Ultimate Guide to Downloading and Using CHDMAN.exe If you’ve ever managed a digital library of retro games, you know the pain of "file bloat." A single PlayStation 1 or SEGA Saturn game can come with dozens of .bin files and a messy .cue file, cluttering your folders and eating up precious storage.
Enter CHDMAN (Compressed Hunks of Data Manager). This powerful tool, originally part of the MAME project, converts bulky disc images into a single, lossless .chd file that can save you up to 50% in disk space.
Here is how to safely download and use chdman.exe to clean up your collection. Where to Download CHDMAN.exe
For safety and reliability, you should always get the official version directly from the source. Since chdman.exe is a component of the MAME emulator, the most secure way to obtain it is by downloading the full MAME binary package.
Visit the Official MAME Page: Head to the MAME Downloads page.
Download the Binary: Choose the latest Windows binary package (usually a self-extracting .exe or .7z file).
Extract the Files: Run the installer or use a tool like 7-Zip to extract the contents.
Find the Executable: Look inside the extracted folder; you will find chdman.exe sitting right alongside the main emulator.
Note for Linux Users: You can usually install it via your terminal using the mame-tools package (e.g., sudo apt install mame-tools). Why Use CHD Files? If an emulator requires raw files, use the
Lossless Compression: You get smaller file sizes without losing any game data or quality.
Single-File Simplicity: It merges multiple .bin tracks into one file, making your library much easier to manage.
Ready to Play: Unlike a .zip or .7z file, most modern emulators (like DuckStation, RetroArch, and PCSX2) can read .chd files directly without needing to decompress them first. How to Use CHDMAN (The Easy Way)
By default, chdman.exe is a command-line tool, which can be intimidating for beginners. To make it user-friendly, most people use Batch Files (.bat). Option 1: Simple Batch Script
Copy chdman.exe into the folder containing your .bin/.cue or .iso files.
Create a new text file in that same folder and paste a command script (like those found on the Recalbox Wiki). Rename the text file to convert.bat.
Double-click the .bat file, and it will automatically process every game in that folder. Option 2: Using a GUI
Searching for chdman.exe alone takes you to third-party DLL websites, abandoned forums, or GitHub repos that offer outdated versions (e.g., from 2016). We strongly advise against downloading standalone EXE files from random websites—they may contain malware, lack modern features (like PS3 CHD support), or fail with "missing DLL" errors.
The correct and safe way to obtain chdman.exe is by downloading the entire MAME tool suite or a dedicated emulator package that includes it.